Nikon D300 User Manual page 19

Press the _ button to zoom in on the image displayed in full-frame
playback or on the image currently highlighted in thumbnail
playback.
The following operations can be performed while zoom is in effect:
To Use Description
Zoom in or
out
View other
areas of
image
_to zoom in
to maximum of
approximately
27 x (large
images), 20 x
(medium images)
or 13 x (small
images). Press q[]tozoom out. While
photo is zoomed in, use multi selector to
view areas of image not visible in monitor.
Keep multi selector pressed to scroll
rapidly to other areas of frame. Navigation
window is displayed when zoom ratio is
altered; area currently visible in monitor is
indicated by yellow border.
Rotate main command dial to view same
location in other images at current zoom
ratio.
View other
images
Change
protect o-n See page 221 for more information.
status
Return to -_
shooting / [] Monitor will turn off. Photographs can be
taken immediately.
mode
Display MENU See page 245 for more information.
menus
220